I rode QHs well over 4500 miles from late 70s thru
late 80s. In that time vet checks went from "recover to 72" within the
hold time, to recover to 68/64 at "gate in to hold", then 64, and now, in
NW almost always 60.
In some extreme weather 56 has
been required. I expected some delays but I found there was
almost no difference in recovery time for my QHs. They often
recovered before the Arabs. (I expect recovery with in 2/3 minutes,
often meet recovery as quick as I can get a check)
Over all, I think the "gate into hold" slowed
the total ride time but improved horse safety greatly.
The QH/Arab and 2 pure breds I've ridden in recent
years almost always meet 60 instantly, and continue to drop at
rest.
I don't think a 56 requirement would be a handicap
to very many fit horses. (Assuming they are brought into a vet stop
smartly)
